Now navagate to your /etc/udev/ folder. Scroll down and right click on rules.d folder and click actions(KDE) and open as root or in Gnome right click and open as administrator. Now copy and paste your55-lomoco.rules in your rules.d folder.

Reboot

Now PCLinuxOS will keep your lomoco dpi setting. To make sure your setting stayed just run lomoco -i from terminal. If all went well it should show the setting you set.

Note: Any time you decide to chance your dpi settings and you want to keep it peramant, make sure you edit your /etc/udev/rules.d/55-lomoco.rules file.